1291114900 has 36 divisors (see below), whose sum is σ = 2807820288. Its totient is φ = 515321440.

The previous prime is 1291114871. The next prime is 1291114921. The reversal of 1291114900 is 94111921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32877 + ... + 60523.

It is an arithmetic number, because the mean of its divisors is an integer number (77995008).

Almost surely, 2^1291114900 is an apocalyptic number.

1291114900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1291114900 is an abundant number, since it is smaller than the sum of its proper divisors (1516705388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1291114900 is a wasteful number, since it uses less digits than its factorization.

1291114900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28128 (or 28121 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1291114900 is about 35932.0873315203. The cubic root of 1291114900 is about 1088.9007519108.

The spelling of 1291114900 in words is "one billion, two hundred ninety-one million, one hundred fourteen thousand, nine hundred".